Tread-shoe for vehicle-wheels.



. Patented Oct. 22, 190|. DSON.

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Il Il N0. 684,922. Patented 001. 22,'I90l.

W. R. DONALDSON.

TREAD SHOE FUR VEHICLE WHEELS.

v (Application led Nov. 15, 1900.) (No Model.) 2 Shets-Sheet 2.

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VILLIAM R. DONALDSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWO- Tl-IIRDS TO WILLIAM O. WORTH, 0F CHICAGO, ILLINOIS, AND HENRY W. KELLOGG, OF BATTLECREEK, MICHIGAN.

TREAD-S-HOE FOR VEHICLE-WH EELS.

SPECIFICATION forming part of Letters Patent No. 684,922, dated October 22, 1901.

` Application filed November 15,1900. Serial No. 36.590. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM R. DONALD- SON, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Tread-Shoes for Vehicle- Vheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable persons skilled inthe art to which it appertains to make and use the same.

My invention relates to improvements in detachable tread-shoes for vehicle-Wheels.

One of the objects of my invention is to provide a series of independently-detachable tread-shoes which may be applied to a vehicle-wheel, another object being to provide a fastening for each of the independent shoes, so arranged thatit either` embraces the respective spoke of the Wheel or is attached on either side thereof and is held in place by means of its contact with the felly of the Wheel.

One of the principal features of my device consists in providing single independent shoes thatvmay be attached to the wheel and separated from each other on the tire of the said wheel in positions equal to the distance between the respective spokes or between any two spokes of the said wheel.

Another object of my invention is to provide a shoe which is held in position on the tire of the wheel and prevented from shifting thereon by the eect of an attaching device which is secured on either side of any one of the said spokes,A the shoe having contact upon the rubber tire of the Wheel and being adapted in its movement to follow the elasticity of the tire, being loosely held with reference to its radial position by the said device, but firmly held circumferentially. V

In the drawings, Figure l shows a portion of a vehicle-wheel with several of the various forms of my device attached thereto. Fig. 2 is a section through line 2 2, Fig. 3 is a section through line 3 3 and Fig. 4 is a section through line 4 4, all of Fig. 1. Fig. 5 is another broken-away portion of a vehicle-wheel, showing several devices attached thereto. Fig.` 6 is a section through line 6 6,

Fig. is a section through line 7 '7, and Fig. 5o

8 is a section through line 8 8, all of Fig. 5.

In all of the devices shown the same features are involved-that is to say, the method of attaching the device to the wheel permits the free and easy motion of the said device as it follows the elastic movement of the tire.

In all of the views the same letters of reference are used to indicate similar parts.

A is a broken-away portion of a vehiclewheel. ct is the felly of the said Wheel. a .is the usual rubber tire, and a2 is the flange which holds the said rubber tire to the felly. a4 represents the spokes ofthe said Wheel.

In all of the views, b, c, cl, e, f, and g in the various shoes indicate pieces of sheet metalthat are curved to fit the form of the rim of the Wheel and to come in contact with the circumferential portion of the tire. b', c', and

d are centrally-enlarged portions providing.

laterally-extending drivers made into the side of the said curved sheet-metal shoes, by

means of which the traction force of the wheel integral piece of the shoe of sheet metal andv turned up at the ends, as shown in Figs. 5 and 8. I have shown various means by which these independently-detachable shoes may be held on the wheel. Figs. 2, 3, and 8 show the manner in which bolts may be used for-this purpose, and in Fig. 4 the curved portions 033' and d4 are hinged at d and (Z7.- The piece d3 is shown as partially embracing the fellyof the wheel. The piece d4 embraces the wheel tothe same degree on the opposite side, but is not shown in Fig. 4. This shoe maybe applied to the wheel by compressing the rubber tire until the pieces d3 and d4 may be easily slipped over the felly, when the resilience of the tire will hold the device in the lposition shown. The pieces (Z3 and d4 are hinged to the shoe on either side of the spokes, so that the circumferential shifting of the device will be limited to the space between the two attaching-clips on either side of the spoke.

In Fig. 6 the device is shown to be attached to the telly of the wheel by means of leather straps and buckles e3 and e4.

In Fig. 7 the pieces fsare hinged, as shown in Fig. 4; but they are held in place by means of the Cotter-pinsf4 andf. (Shown in Fig.)

There may be devices other than those which I have illustrated which may be applied and used with equal facility to those that I have shown without departing from the gist and spirit of my invention. I have showin a sufficient number to illustrate the object which I have in view-that is to say, a separable separate independent removable shoe which may be applied to a vehicle wheel around the tire at as many points as desirable and which may beadapted to move radially with the resilience of the tire upon which it bears. The device is held from shifting upon the surface of the wheel by means of attaching devices, which are secured on either side of the said spokes. These shoes may be applied to the Wheel easily and quickly and at any time. They are light, do not occupy much room in the vehicle when not in use, and are adapted te be used only at such times when the vehicle is passing over roads whereby their use becomes imperative.

Having described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is*

ceases 1. A detachable treadshoe for vehicle' wheels, comprising an independent, removable shoe, and an attachment on each side of a spoke of said wheel for holding said shoe in place upon the tire of saidwheel, substantially as set forth.

2. A detachable tread slice for Vehiclewheels, comprising an independent, removable shoe, and an attachment on each side of a spoke of said wheel forholding said shoe in place upon the tire of said wheel, substantially as set forth.

detachable tread-shoe for vehicle wheels, comprising an independent, removable shoe, an attachment on each side of a spoke of said wheel for holding said shoe to prevent circumferential displacement, said shoe free to move radially from center ofsaid Wheel, substantially as set forth.

4:. A detachable tread shoe for vehiclewheels, comprising a shoe curved to conform to the circumference ot` the tire of said wheel, and curved transversely, having a longer radius than that of the transverse curve of the tire upon which it is adapted to rest, andan attachment on each side of a spoke of said wheel for holding said shoe upon the tire of said wheel against circumferential displacement, substantially as set forth.

In testimony whereof I have signed this specification, in the presence of two subscribing witnesses, this 5th day of November, A. D. 1900.

IVILLIAM R. DONALDSON.

Witnesses:

FORE BAIN, M. F. ALLEN. 

